Princeton Critical Minerals has raised $16 million in combined equity and non-dilutive funding to accelerate the commercialization of its lithium production technologies in the United States and South America. The Princeton University spinout is developing systems designed to improve lithium recovery from brine resources while reducing energy use, chemical consumption, and operational complexity. The financing comes as demand for lithium continues to expand beyond electric vehicles into stationary storage, artificial intelligence infrastructure, robotics, drones, and other electrification applications.
Funding to Support Commercial Expansion
The financing includes an $11 million Series A led by SOSV, with participation from the Grantham Foundation for the Protection of the Environment, Prospect Innovation, ASTOR Management AG, Black Forest Ventures, and the New Jersey Economic Development Authority through the New Jersey Innovation Evergreen Fund. Princeton Critical Minerals has also secured more than $5 million in recent grant funding from the National Science Foundation, ARPA-E, and NJEDA. The company plans to use the capital to increase manufacturing capacity, support additional commercial deployments, establish production capabilities in the United States, and advance its broader technology platform.
Improving Lithium Production From Brines
Princeton Critical Minerals focuses on brine-based lithium production, a major source of global lithium resources but one that can require large evaporation areas, long processing timelines, and substantial infrastructure. Its platform combines evaporation enhancement, AI-enabled pond monitoring, and selective crystallization technologies intended to increase throughput and improve operational efficiency. The company says its approach can be integrated into existing lithium operations while also supporting newer extraction processes that face challenges around concentration, energy consumption, and commercial scale-up.
Commercial Deployment in Chile
The company has moved its Lilypad technology from pilot testing into an active production environment in Chile, one of the world's most important lithium-producing markets. The system has been integrated into existing commercial evaporation ponds that process mineral-rich underground brines, providing Princeton Critical Minerals with an industrial-scale deployment of its technology. The company is also preparing additional commercial projects in the United States as policymakers and industry participants seek to strengthen domestic critical-mineral supply chains.
Expanding the Technology Platform
Alongside Lilypad, Princeton Critical Minerals is field-testing two additional technologies in Chile focused on enhancing evaporation and applying AI to process monitoring and optimization. These projects are intended to broaden the company's platform and give lithium producers tools that can improve production without requiring a complete redesign of existing operations. By targeting multiple stages of the brine-processing workflow, the company aims to shorten production cycles, lower costs, and increase output from both conventional and emerging lithium production systems.
Rising Demand for Critical Minerals
The funding arrives as lithium producers face pressure to expand supply for a widening range of end markets, including grid-scale batteries, data centers, transportation, and advanced industrial technologies. Chief Executive and co-founder Sean Zheng said the market is increasingly shaped by multiple industries competing for access to constrained critical-mineral supply chains rather than by electric vehicles alone. Princeton Critical Minerals is positioning its technology as infrastructure that can help producers respond to this demand by increasing recovery and improving the economics of existing assets.
Princeton Critical Minerals' latest financing gives the company additional resources to move from technology development toward broader commercial adoption. With deployments underway in Chile and U.S. expansion in preparation, the startup is seeking to establish its platform as a more efficient layer within the lithium production process. Its progress will depend on how effectively the technology performs at scale and whether producers adopt it as they invest in additional capacity for the global energy and digital economy.